Efficacy of laryngeal mask airway Supreme and Streamlined Liner of the Pharynx Airway in patients undergoing general anesthesia

Abstract

Objective To compare the efficacy of laryngeal mask airway Supreme （LMAS） and Streamlined Liner of the pharynx Airway （SLIPA） in patients undergoing general anesthesia. Methods Eighty ASA I or II patients aged 18-70 yr weighing 45-80 kg undergoing general anesthesia were randomly divided into 2 groups （n = 40 each）： group LMAS and group SLIPA. Pharyngeal airway was inserted after induction of anesthesia with fentanyl 3 ug/kg and propofol 2.0-2.5 mg/kg. MAP, HR, number of insertion, rate of successful placement at first attempt, placement time, airway sealing pressure, peak and mean airway pressure and side effects were recorded. Results There were no significant differences in MAP, HR and rate of successful placement at first attempt between the two groups. The placement time was significantly longer, the airway sealing pressure lower and the incidence of side effects higher in SLIPA group than in LMAS group. There was no significant difference in the peak and mean airway pressure between the 2 groups. Conclusion Both LMAS and SLIPA can assure good airway sealing and adequate ventilation. The complication is rare. The efficacy of LMAS is better. Key words: Laryngeal mask ; Respiration, artificial